/*
 * Copyright 2011, Blender Foundation.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor: 
 *		Jeroen Bakker 
 *		Monique Dewanchand
 */

#include "COM_AlphaOverNode.h"

#include "COM_MixBaseOperation.h"
#include "COM_AlphaOverKeyOperation.h"
#include "COM_AlphaOverMixedOperation.h"
#include "COM_AlphaOverPremultiplyOperation.h"

#include "COM_ExecutionSystem.h"
#include "COM_SetValueOperation.h"
#include "DNA_material_types.h" // the ramp types

void AlphaOverNode::convertToOperations(ExecutionSystem *graph, CompositorContext * context)
{
	InputSocket *valueSocket = this->getInputSocket(0);
	InputSocket *color1Socket = this->getInputSocket(1);
	InputSocket *color2Socket = this->getInputSocket(2);
	OutputSocket *outputSocket = this->getOutputSocket(0);
	bNode *editorNode = this->getbNode();
	
	MixBaseOperation *convertProg;
	NodeTwoFloats *ntf = (NodeTwoFloats*)editorNode->storage;
	if (ntf->x!= 0.0f) {
		AlphaOverMixedOperation *mixOperation  = new AlphaOverMixedOperation();
		mixOperation->setX(ntf->x);
		convertProg = mixOperation;
	
	}
	else if (editorNode->custom1) {
		convertProg = new AlphaOverKeyOperation();
	}
	else {
		convertProg = new AlphaOverPremultiplyOperation();
	}
	
	convertProg->setUseValueAlphaMultiply(false);
	if (color1Socket->isConnected()) {
		convertProg->setResolutionInputSocketIndex(1);
	}
	else if (color2Socket->isConnected()) {
		convertProg->setResolutionInputSocketIndex(2);
	}
	else {
		convertProg->setResolutionInputSocketIndex(0);
	}
	valueSocket->relinkConnections(convertProg->getInputSocket(0), true, 0, graph);
	color1Socket->relinkConnections(convertProg->getInputSocket(1), true, 1, graph);
	color2Socket->relinkConnections(convertProg->getInputSocket(2), true, 2, graph);
	outputSocket->relinkConnections(convertProg->getOutputSocket(0));
	graph->addOperation(convertProg);
}